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authorWolfgang Denk <wd@denx.de>2011-08-04 23:05:07 +0200
committerWolfgang Denk <wd@denx.de>2011-08-04 23:05:07 +0200
commitfb6440ee9b110b759ef61fd80bbd0df1bbf0f37b (patch)
treedbde38784fb8b48c7f9b14e70a947fab3a1f3bab /drivers/gpio
parent01b0f50060923e89693bf155c677e4f665916b3f (diff)
parentb608b95753873a5073f550cca002c4bebf1a18f5 (diff)
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Merge branch 'master' of git://git.denx.de/u-boot-arm
* 'master' of git://git.denx.de/u-boot-arm: drivers/rtc: add Marvell Integrated RTC Armada100: Add Board Support for Marvell GuruPlug-Display Armada100: MFP macro naming correction arm: auto gen asm-offsets.h for mb86r0x spear: fix build errors for spear3xx/spear600 platforms cosmetic: arm: lib/board.c: Coding Style cleanup ARM: versatile: fix board support SMDKV310: Enable device tree support SMDKV310: MMC_SPL: Fix building when using "make O=" arm: a320: enable tagged list support arm: a320: fix multiline comment style ARMv7: u8500_href: Add missing header to fix compiler warning Removed unused define, CONFIG_ARMV7. avr32: add grasshopper (ICnova AP7000) board AT91/SPI: fix atmel_dataflash_spi.c to allow building without warnings MAKEALL: remove AT91 boards that are in boards.cfg AT91: Makes AT91SAM9263-EK build correctly against u-boot-atmel/master AT91: Makes AT91SAM9263 SoC build correctly against u-boot-atmel/master AT91: Board fix for AT91SAM9261-EK AT91: SoC fix at91sam9261_matrix.h AT91: Makes AT91SAM9RL-EK build correctly against u-boot-atmel/master AT91: Makes AT91SAM9RL SoC build correctly against u-boot-atmel/master AT91: change common at91sam9261 files to compile with new scheme AT91: fix mistake in at91sam9260_devices.c(spi1_hw_init) a/a/c/arm920t/at91/reset.c: drop obsolete CONFIG_AT91RM9200_USART README: fix arm920t/at91 path net/eth.c: drop obsolete at91rm9200 support README.at91-soc: remove AT91(RM9200) joining notice a/a/c/arm920t/cpu.c: remove CONFIG_AT91_LEGACY warning MAKEALL: remove obsolete at91rm9200 soc ARM: remove obsolete at91rm9200 omap4: clock init support for omap4460 omap4: support TPS programming omap: reuse omap3 gpio support in omap4 omap4: sdram init changes for omap4460 omap4: add omap4460 revision detection mkimage: Add OMAP boot image support omap: add MMC and FAT support to SPL omap: add basic SPL support armv7: start.S: fixes and enhancements for SPL omap4: automatic sdram detection omap4: calculate EMIF register values omap4: add sdram init support omap4: add clock support omap4: add OMAP4430 revision check omap4: cleanup pin mux data omap4: utility function to identify the context of hw init DA8xx: fix LPSC constants DA8xx: switch an enum to defines for consistency DA8xx: add MMC/SD controller addresses DaVinci EMAC: declare function for all DA8xx CPUs DA8xx: add generic GPIO driver DaVinci: rename gpio_defs.h to gpio.h omap3evm: eth: Include functions only when necessary omap3evm: Update ethernet reset sequence for Rev.G board omap3evm: eth: split function setup_net_chip omap3: Include array definition only when it is used omap730p2: fix build breaks omap2420h4: fix build breaks omap1610inn: fix build breaks omap1510inn: fix build breaks omap5912osk: fix build breaks omap1610h2: fix build breaks
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/Makefile1
-rw-r--r--drivers/gpio/da8xx_gpio.c281
2 files changed, 282 insertions, 0 deletions
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 1e3ae11..62ec97d 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -32,6 +32,7 @@ COBJS-$(CONFIG_MXC_GPIO) += mxc_gpio.o
COBJS-$(CONFIG_PCA953X) += pca953x.o
COBJS-$(CONFIG_S5P) += s5p_gpio.o
COBJS-$(CONFIG_TEGRA2_GPIO) += tegra2_gpio.o
+COBJS-$(CONFIG_DA8XX_GPIO) += da8xx_gpio.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
diff --git a/drivers/gpio/da8xx_gpio.c b/drivers/gpio/da8xx_gpio.c
new file mode 100644
index 0000000..0308223
--- /dev/null
+++ b/drivers/gpio/da8xx_gpio.c
@@ -0,0 +1,281 @@
+/*
+ * GPIO driver for TI DaVinci DA8xx SOCs.
+ *
+ * (C) Copyright 2011 Guralp Systems Ltd.
+ * Laurence Withers <lwithers@guralp.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/gpio.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/davinci_misc.h>
+
+
+static struct gpio_registry {
+ int is_registered;
+ char name[GPIO_NAME_SIZE];
+} gpio_registry[MAX_NUM_GPIOS];
+
+
+#define pinmux(x) (&davinci_syscfg_regs->pinmux[x])
+
+static const struct pinmux_config gpio_pinmux[] = {
+ { pinmux(1), 8, 7 }, /* GP0[0] */
+ { pinmux(1), 8, 6 },
+ { pinmux(1), 8, 5 },
+ { pinmux(1), 8, 4 },
+ { pinmux(1), 8, 3 },
+ { pinmux(1), 8, 2 },
+ { pinmux(1), 8, 1 },
+ { pinmux(1), 8, 0 },
+ { pinmux(0), 8, 7 },
+ { pinmux(0), 8, 6 },
+ { pinmux(0), 8, 5 },
+ { pinmux(0), 8, 4 },
+ { pinmux(0), 8, 3 },
+ { pinmux(0), 8, 2 },
+ { pinmux(0), 8, 1 },
+ { pinmux(0), 8, 0 },
+ { pinmux(4), 8, 7 }, /* GP1[0] */
+ { pinmux(4), 8, 6 },
+ { pinmux(4), 8, 5 },
+ { pinmux(4), 8, 4 },
+ { pinmux(4), 8, 3 },
+ { pinmux(4), 8, 2 },
+ { pinmux(4), 4, 1 },
+ { pinmux(4), 4, 0 },
+ { pinmux(3), 4, 0 },
+ { pinmux(2), 4, 6 },
+ { pinmux(2), 4, 5 },
+ { pinmux(2), 4, 4 },
+ { pinmux(2), 4, 3 },
+ { pinmux(2), 4, 2 },
+ { pinmux(2), 4, 1 },
+ { pinmux(2), 8, 0 },
+ { pinmux(6), 8, 7 }, /* GP2[0] */
+ { pinmux(6), 8, 6 },
+ { pinmux(6), 8, 5 },
+ { pinmux(6), 8, 4 },
+ { pinmux(6), 8, 3 },
+ { pinmux(6), 8, 2 },
+ { pinmux(6), 8, 1 },
+ { pinmux(6), 8, 0 },
+ { pinmux(5), 8, 7 },
+ { pinmux(5), 8, 6 },
+ { pinmux(5), 8, 5 },
+ { pinmux(5), 8, 4 },
+ { pinmux(5), 8, 3 },
+ { pinmux(5), 8, 2 },
+ { pinmux(5), 8, 1 },
+ { pinmux(5), 8, 0 },
+ { pinmux(8), 8, 7 }, /* GP3[0] */
+ { pinmux(8), 8, 6 },
+ { pinmux(8), 8, 5 },
+ { pinmux(8), 8, 4 },
+ { pinmux(8), 8, 3 },
+ { pinmux(8), 8, 2 },
+ { pinmux(8), 8, 1 },
+ { pinmux(8), 8, 0 },
+ { pinmux(7), 8, 7 },
+ { pinmux(7), 8, 6 },
+ { pinmux(7), 8, 5 },
+ { pinmux(7), 8, 4 },
+ { pinmux(7), 8, 3 },
+ { pinmux(7), 8, 2 },
+ { pinmux(7), 8, 1 },
+ { pinmux(7), 8, 0 },
+ { pinmux(10), 8, 7 }, /* GP4[0] */
+ { pinmux(10), 8, 6 },
+ { pinmux(10), 8, 5 },
+ { pinmux(10), 8, 4 },
+ { pinmux(10), 8, 3 },
+ { pinmux(10), 8, 2 },
+ { pinmux(10), 8, 1 },
+ { pinmux(10), 8, 0 },
+ { pinmux(9), 8, 7 },
+ { pinmux(9), 8, 6 },
+ { pinmux(9), 8, 5 },
+ { pinmux(9), 8, 4 },
+ { pinmux(9), 8, 3 },
+ { pinmux(9), 8, 2 },
+ { pinmux(9), 8, 1 },
+ { pinmux(9), 8, 0 },
+ { pinmux(12), 8, 7 }, /* GP5[0] */
+ { pinmux(12), 8, 6 },
+ { pinmux(12), 8, 5 },
+ { pinmux(12), 8, 4 },
+ { pinmux(12), 8, 3 },
+ { pinmux(12), 8, 2 },
+ { pinmux(12), 8, 1 },
+ { pinmux(12), 8, 0 },
+ { pinmux(11), 8, 7 },
+ { pinmux(11), 8, 6 },
+ { pinmux(11), 8, 5 },
+ { pinmux(11), 8, 4 },
+ { pinmux(11), 8, 3 },
+ { pinmux(11), 8, 2 },
+ { pinmux(11), 8, 1 },
+ { pinmux(11), 8, 0 },
+ { pinmux(19), 8, 6 }, /* GP6[0] */
+ { pinmux(19), 8, 5 },
+ { pinmux(19), 8, 4 },
+ { pinmux(19), 8, 3 },
+ { pinmux(19), 8, 2 },
+ { pinmux(16), 8, 1 },
+ { pinmux(14), 8, 1 },
+ { pinmux(14), 8, 0 },
+ { pinmux(13), 8, 7 },
+ { pinmux(13), 8, 6 },
+ { pinmux(13), 8, 5 },
+ { pinmux(13), 8, 4 },
+ { pinmux(13), 8, 3 },
+ { pinmux(13), 8, 2 },
+ { pinmux(13), 8, 1 },
+ { pinmux(13), 8, 0 },
+ { pinmux(18), 8, 1 }, /* GP7[0] */
+ { pinmux(18), 8, 0 },
+ { pinmux(17), 8, 7 },
+ { pinmux(17), 8, 6 },
+ { pinmux(17), 8, 5 },
+ { pinmux(17), 8, 4 },
+ { pinmux(17), 8, 3 },
+ { pinmux(17), 8, 2 },
+ { pinmux(17), 8, 1 },
+ { pinmux(17), 8, 0 },
+ { pinmux(16), 8, 7 },
+ { pinmux(16), 8, 6 },
+ { pinmux(16), 8, 5 },
+ { pinmux(16), 8, 4 },
+ { pinmux(16), 8, 3 },
+ { pinmux(16), 8, 2 },
+ { pinmux(19), 8, 0 }, /* GP8[0] */
+ { pinmux(3), 4, 7 },
+ { pinmux(3), 4, 6 },
+ { pinmux(3), 4, 5 },
+ { pinmux(3), 4, 4 },
+ { pinmux(3), 4, 3 },
+ { pinmux(3), 4, 2 },
+ { pinmux(2), 4, 7 },
+ { pinmux(19), 8, 1 },
+ { pinmux(19), 8, 0 },
+ { pinmux(18), 8, 7 },
+ { pinmux(18), 8, 6 },
+ { pinmux(18), 8, 5 },
+ { pinmux(18), 8, 4 },
+ { pinmux(18), 8, 3 },
+ { pinmux(18), 8, 2 },
+};
+
+
+
+int gpio_request(int gp, const char *label)
+{
+ if (gp >= MAX_NUM_GPIOS)
+ return -1;
+
+ if (gpio_registry[gp].is_registered)
+ return -1;
+
+ gpio_registry[gp].is_registered = 1;
+ strncpy(gpio_registry[gp].name, label, GPIO_NAME_SIZE);
+ gpio_registry[gp].name[GPIO_NAME_SIZE - 1] = 0;
+
+ davinci_configure_pin_mux(&gpio_pinmux[gp], 1);
+
+ return 0;
+}
+
+
+void gpio_free(int gp)
+{
+ gpio_registry[gp].is_registered = 0;
+}
+
+
+void gpio_toggle_value(int gp)
+{
+ struct davinci_gpio *bank;
+
+ bank = GPIO_BANK(gp);
+ gpio_set_value(gp, !gpio_get_value(gp));
+}
+
+
+int gpio_direction_input(int gp)
+{
+ struct davinci_gpio *bank;
+
+ bank = GPIO_BANK(gp);
+ setbits_le32(&bank->dir, 1U << GPIO_BIT(gp));
+ return 0;
+}
+
+
+int gpio_direction_output(int gp, int value)
+{
+ struct davinci_gpio *bank;
+
+ bank = GPIO_BANK(gp);
+ clrbits_le32(&bank->dir, 1U << GPIO_BIT(gp));
+ gpio_set_value(gp, value);
+ return 0;
+}
+
+
+int gpio_get_value(int gp)
+{
+ struct davinci_gpio *bank;
+ unsigned int ip;
+
+ bank = GPIO_BANK(gp);
+ ip = in_le32(&bank->in_data) & (1U << GPIO_BIT(gp));
+ return ip ? 1 : 0;
+}
+
+
+void gpio_set_value(int gp, int value)
+{
+ struct davinci_gpio *bank;
+
+ bank = GPIO_BANK(gp);
+
+ if (value)
+ bank->set_data = 1U << GPIO_BIT(gp);
+ else
+ bank->clr_data = 1U << GPIO_BIT(gp);
+}
+
+
+void gpio_info(void)
+{
+ int gp, dir, val;
+ struct davinci_gpio *bank;
+
+ for (gp = 0; gp < MAX_NUM_GPIOS; ++gp) {
+ bank = GPIO_BANK(gp);
+ dir = in_le32(&bank->dir) & (1U << GPIO_BIT(gp));
+ val = gpio_get_value(gp);
+
+ printf("% 4d: %s: %d [%c] %s\n",
+ gp, dir ? " in" : "out", val,
+ gpio_registry[gp].is_registered ? 'x' : ' ',
+ gpio_registry[gp].name);
+ }
+}